Orion HM/HO350 Hydraulic Pressure Switches Instructions

Orion HM/HO350 Hydraulic Pressure Switches

Product Usage Instructions

• Installation:
  • Refer to the installation drawing for mounting instructions:
  • For line mounting: Follow the dimensions specified for line mounting.
  • For subplate mounting: Refer to the dimensions provided for subplate mounting.
  • For Vertical Stack CD 13×28: Install according to the specified dimensions.
  • For Vertical Stack CD 29 Diagonally: Follow the provided dimensions for diagonal installation.
• Additional Installation Details:
  • Rotation: The product can be rotated 90 degrees for adjustment.
  • Fixing: Secure the product using two fixing screws.
  • Protective Cap: Use the lockable protective cap for added safety.

FAQs

• Q: How do I ensure proper sealing during installation?
  • A: Make sure to use the provided O Rings and Sealing Rings on the designated parts to ensure proper sealing.
• Q: Can the product be used in high-pressure applications?
  • A: The HM/HO350 Hydraulic Pressure Switches are designed for high-pressure applications. However, always refer to the product specifications for the maximum pressure limits.

Introduction

• The initial of our product lines, these switches are meant for light-duty applications for the OEM industry.
• Many of them need to be used in clean atmospheres, sometimes inside a panel.
• These are compact, low-cost, and built just for the intended use.
• Most of them can be configured for a particular purpose by selecting the wetted parts, but electrical ratings are restricted to 5 A and 250 VAC.

APPLICATIONS

• Lubrication Systems
• Steam Sterilisers
• Hospital Equipment
• Water treatment
• Fire protection
• Machine Tools
• Boilers and Compressors
• Furnaces
• Textile Machinery
• Pharmaceuticals
• Hydraulics & Pneumatics
• Automobiles

PRODUCT SPECIFICATIONS

• Storage temperature: Atmospheric temperature
• Operating ambient temperature: – 20 C to + 60 Co
• Media temperature: for rubber diaphragms, 80 C max Can be offered for higher temperatures with other capsule combinations
• Setpoint repeatability: ± 1 % of FSR
• Enclosure: Pressed steel powder coated with plastic cover
• Switch output: Choice of SPDT, 2SPDT, hermetically sealed, gold-plated contacts
• Process connection: ¼” BSP standard, other options like flanges, triclover clamps, and diaphragm seals are available.
• Accessories: Adaptors, 2″ pipe-mounting brackets, siphons, impulse tubes, etc.

FEATURES

• Compact
• Scale for easier setpoint (optional)
• Enclosure protection: up to IP 65 (varies with model)
• Reliable accurate microswitches for long-life switching
• Customized arrangements for switching values on request
• Easy safe wiring options
• Field adjustable
• Accuracy +/- 1 % FSR
• Warranty: 2 years
• Accuracy changes with switch configuration

OTHER MODELS

Using the section

This section helps you make a logical choice in selecting the best product for a particular application. It allows a user familiar with our product line to locate the exact page the product is listed on. For those not familiar with our products, a logical sequence is given to help the user pick the best product for their need. By taking a few minutes to familiarise yourself with the catalog organization, you will find it very easy to locate the product/information you need.

1. The contents page lists the broad outline in which the catalog is organized and will help the user familiar with products to select the page on which the product or other useful information is listed.
2. Need Product Selection help?
   • Product selection help will start with the “Pictorial Index” on Page 201, where the products are broadly classified. A brief description of each product group, a typical photo of the product within the group, and the page number on which it is listed are given.
   • If the user is not familiar with the products, a product selection guide is provided on pages 204 through 209, where photos for each product and important specifications are given to help determine and select the best product for the application.
   • By evaluating and comparing these parameters, a logical selection can be made. Turn to the page on which the product information for the selected product is listed,:
   • Capsule Construction details
   • Physical sizes
   • Special features
   • Ranges, hysteresis, electrical ratings, etc.
   • Ordering information
   • Some applications
   • The organization of each of these pages is demonstrated on pages 202 and 203, of this section “How to use this section”.
   • In many cases, more than one product may work. For the most cost-effective solution, compare prices and consider alternatives. Remember, the end cost includes the initial product price, plus the installation, plus the service.
3. Need the terminology explained? (see page 300)
   • Turn to page 300 for the definitions and terminology.
   • This will help you familiarize yourself with the terms used throughout the catalog.
4. Need information on Accessories? (see page 292)
   • Turn to page 292 for information on important accessories. These will give information on only important accessories, and information needed when these are to be supplied with our products.
5. Need selection guidance? (see page 301)
   • A logical procedure on page 301 will help you to consider most of the important factors when selecting a pressure switch.
6. Need other products? (see page 302)
   • Products other than those listed in this catalog are referenced on these pages. Separate catalogs for these products are available.

Compact Switches Pictorial Index

PRESSURE SWITCHES

PRESSURE DIFFERENCE SWITCHES

VACUUM SWITCHES

LOW RANGE

• Low-range pressure difference switches can be used as vacuum switches when high pressure port is vented to atmosphere
• Hydraulic ranges are ranges typically from 2 bar to 600 bar, used in oil applications.
• However, these switches can be used for other media depending on wetted parts compatibility.

HOW TO USE this section

Due to the variety in product types and their salient features, catalog page formats may vary. But generally, the following format is adhered to.

Elements appearing on each page will be:

1. Product family/series – A product family/series will appear on the outside page corner, depending on the left/right-hand page, and will be in large bold type.
2. Product description – will appear immediately following the product family/series at the top of the page and will be in bold type.
3. Features – will appear next to the product description & will enlist only the major attributes.
4. Pressure capsule details – will show the construction of the pressure capsule and all its internal parts. If the process/working medium is variable, the wetted parts will be mentioned in italics. If the wetted parts are unique, the material of construction (MOC) will be mentioned alongside in brackets. Where the material of construction is not specified, it will vary and the options are to be selected by the user considering the compatibility of the process/working medium. Modifications can be made to suit any particular medium if the answer to your needs is not in the standard MOC listed. For products for which the process/working medium is predefined, pressure capsule details are not provided (e.g. as in the case of the comparison test pump). Pressure capsule details of accessories are not given.
5. Installation drawing – will show the typical installation dimensions of products as they exist in their standard forms. The dimensions are mentioned in millimeters and also in inches to facilitate the user. The dimensions of accessories will have to be added to these to arrive at any particular general arrangement (GA) drawings. The dimensions are approximate and for precise dimensions, where mounting space is restricted, the user may contact the nearest sales office. Installation drawings of only fast-moving accessories are given.
6. Photos – will appear on the relevant top of the page for products. If there are mounting variations/styles, all the styles for standard products will appear for easy identification. Options, if included in the photograph, are for demonstration only, and are not a part of the standard equipment. For accessories, the photos are not given due to the sheer variety and range available.
7. Logo – will appear on the left the top of the page to identify the manufacturer.
8. Characteristics – Range tables and their relevant data, e.g. the range covered, the differentials, and maximum working pressures will generally appear on the right-hand page. Additional technical details will also be mentioned, wherever required, on the right-hand side of the page.
9. Ordering guide – A guide as to how to order the particular series’ variations will appear on the right-hand bottom of the page. Only the variations available within a particular product family/series will appear here. Any additional accessories or modifications required for the product need to be mentioned in the text by the user.
10. Some applications – will appear under features. This is for easy understanding of the specific use of the product.
11. Numerous combinations are possible when pressure switches are provided with accessories like chemical seals, snubbers, remote seals, pipe mounting brackets, a combination of switches mounted in a panel, etc. Users are requested to provide the details of accessories required in text/drawings, as separate identification codes are provided for pressure switches fitted and supplied with accessories.

Product Selection Guide

High Range Pressure Switches

Accessories can be supplied with most of the switches. Please consult the sales office.

Hydraulic Pressure Switches Hygeine Pressure Switches

(Triclover)
Fixed| Adjustable| Fixed| Adjustable
± 1| ± 1| ± 1.5
3 bar to 400 bar| 0.2 bar to 15 bar
Pr. diecast Al.

IP 65

| Pressed Steel Enclosure IP 40
Piston EN8 SS| Diaphragm SS316L

Aluminium Brass

| Aluminium Triclover SS316L SS316L
PTFE, Viton, Brass, EN8|
SS316, Hastelloy B2, Hastelloy C4, Hastelloy C22, Hastelloy C276, Inconel Alloy 600, Monel Alloy 400, Monel Alloy K500, Nickel, Platinum, Tantalum, Titanium, Zirconium, Silver, PTFE|
80oC maximum. For higher temperatures, please use impulse tubing/chemical seals.
SPDT Snap action switch rated at 5A, 250 VAC, 0.2 A, 250 VDC resistive.

Accessories can be supplied with most of the switches. Please consult the sales office.

High Range Pressure Switches Hydraulic Pressure Switches

Accessories can be supplied with most of the switches. Please consult the sales office.

Hydraulic Pressure Switches Vacuum Switches

vacuum sw.
Fixed| Fixed| Adjustable| Fixed
± 2| ± 2| ± 2| ± 2
4 bar to 600 bar| 760 to 100 mm Hg vac| 760 to 100 mm Hg vac| 760 to 100 mm Hg vac
Cast aluminium to IP 54| Pressure diecast Aluminium IP 54

IP 65

Piston EN8 SS|  | Diaphragm

nylon reinforced neoprene diaphragm PTFE

Aluminium Brass

|

Aluminium Brass/SS316

EN8, Brass/SS, Viton| SS

–

|  |

–

|  |

–

80oC maximum. For higher temperatures, please use impulse tubing/chemical seals.
SPDT Snap action switch rated at 5A, 250 VAC, 0.2 A, 250 VDC resistive.
 | 15 A, 250 VAC (res.) Optionally|

Accessories can be supplied with most of the switches. Please consult the sales office.

Low Range Pressure Switches High Range Pressure Difference Switches

Accessories can be supplied with most of the switches. Please consult the sales office.

High Range Pressure Difference Switches Low Range Pressure Difference Switches

Pressure diecast Aluminium IP 54 IP 65
diaphragm nylon reinforced neoprene PTFE|  | diaphragm nylon-reinforced neoprene
Aluminium Brass/SS 316|  | Brass/SS 316| MS SS316
SS, PTFE| SS, Nitrile, Aluminium
SS316, Hastelloy B2, Hastelloy C4, Hastelloy C22, Hastelloy C276, Inconel Alloy 600, Monel Alloy 400, Monel Alloy K500, Nickel, Platinum, Tantalum, Titanium, Zirconium, Silver, PTFE| –
80oC maximum. For higher temperatures, please use impulse tubing/chemical seals.
5A, 250VAC, 0.2 A, 250VDC resistive.|  | SPDT Snap action switch rated at 5A, 250 VAC, 0.2 A, 250 VDC resistive.

Accessories can be supplied with most of the switches. Please consult the sales office.

PRESSURE CAPSULE DETAILS

Note: wetted parts are mentioned in italics.

INSTALLATION DRAWING

1. can be rotated 90o
2. two fixing screws
3. space for removing the plug
4. space for removing key
5. lockable protective cap
   • APPROX. DIMENSIONS IN
   • mm/inches

GENERAL INFORMATION :

HM series pressure switches have a pressure die-cast aluminum powder-coated enclosure and are recommended for manifold mounting hydraulic applications. The repeat accuracy is better than ± 1% FSR. A connector to DIN 43650 is provided for wiring. Mainly intended for high-pressure hydraulic presses.

FEATURES:

• Compact
• Lightweight
• Three mounting styles
• Lockable protective cap to avoid tampering (optional)
• Choice of wetted parts to suit working media
• Electrical rating: 5A, 250VAC; 0.2A, 250 VDC (res.)

Some Applications: Used in high/low-pressure alarms in CNC machines, compressors, hydraulic power packs, manifolds/stacks with sandwich plates, etc.

Range Selection Table

Range Code| Range (rising pressure) bar (psi)| *Approximate Maximum Differential bar (psi)| Maximum Working Pressure bar (psi)**
---|---|---|---
HM350| 35 – 350| 60| 500
(507.63 – 5076.32)| (870.22)| (7251.89)

Differential rises with setpoint

How to order HM350 Hydraulic pressure switches

Group 1| Group 2| Group 3| Group 4| Group 5| Group 6
---|---|---|---|---|---
Model| Range Code| Base Type| Protective Cap| Wetted Parts| Enclosure
HM 350- Hydraulic Pressure Switch
HO 350- Hydraulic Pressure Switch| 350| S – for Subplate mounting.
L – for line Mounting V – for vertical Stacking (2 mounting holes)
R – for vertical Stacking (4 mounting holes)| U – without any protective cap
P – with a lockable protective cap| M- for Standard Wetted parts| 0 – IP 65

Eg. A hydraulic pressure switch, pressure range from 35 bar to 350 bar, a subplate mounting element without a lockable protective cap and standard wetted parts with a standard enclosure shall be specified by

Group 1| Group 2| Group 3| Group 4| Group 5| Group 6
---|---|---|---|---|---
HM| 350| S| U| M| 0

Please specify a full model number to avoid ambiguity. If only the first two groups are specified while ordering, uncalibrated switches with standard wetted parts and enclosures will be supplied.

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